158 THIRTY-FIFTH REPORT ON THE STATE MUSEUM. 
cal form of the species, a form which I have not observed here, and 
which probably does not occur with us. It is a little remarkable that 
none of the published descriptions and figures of this species, so far 
as I have seen them, give the spore characters. Those characters are 
often of the utmost value in distinguishing closely related species. 
In regard to the spores of A. metulesporus, the descriptions do not 
all agree, but the discrepancies are probably due to variability in the 
spores and to lack of care in the examination. In Epicrisis they are 
said to be twice as large as in the allied species, and acutely pointed at 
one end. In Grevillea, Vol. I, p. 55, they are said to be nine-pin 
shaped or obliquely clavate. In Mycological Ilustrations, by M. C. 
Cvuoke, they are represented as fusiform and acute at both ends, In 
our plant they are nearly fusiform in shape, but varying somewhat in 
the character of the apices, which are sometimes acute, sometimes 
blunt, and sometimes acute at one end and blunt at the other. The 
species has a wide range, having been found in Ceylon, England and 
Alabama. 
ANNULOSI. 
Annulus superior, fixed, subpersistent, universal veil adnate to the pileus. 
The species of this tribe are chiefly distinguished by the well-de- 
veloped but fixed and rather persistent annulus. They are generally 
larger and more fleshy than those of the preceding tribe. In some 
species the lamellz, and in others the whole plant changes color in 
drying. 
AGARICUS CEPASTIPES, Sow. 
Onion-stemmed Agaric. 
Pileus thin, at first ovate, then campanulate or expanded,umbonate, 
soon adorned with numerous minute brownish scales which are often 
granular or mealy, plicate striate on the margin, white or yellow, the 
umbo darker; lamelle thin, close, free, white, becoming dingy with age 
or in drying; stem rather long, tapering toward the apex, generally 
enlarged in the middle or near the base, hollow, annulus thin, subper- 
sistent ; spores subelliptical, uninucleate, .0003’ —.0004’ long, .0002’ 
— .0003' broad. 
Plant often ceespitose, 2’/—4’ high ; pileus 1’— 2’ broad; stem 2” 
— 3" thick. 
Rich ground and decomposing vegetable matter. Also in graperies 
and conservatories. Buffalo, G. W. Clinton. Albany, A. /. Chatfield. 
The species takes its name from the peculiar oblong swelling or en- 
largement in the middle or the lower part of the stem. It is similar to 
